Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
187157 (2005 RT9)
Classification: Main-belt Asteroid          SPK-ID: 2187157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910196529778447 5.9908e-08  
a 2.674121449739197 1.7693e-08 au
q 2.163311698389405 1.6267e-07 au
i 11.24351431450641 7.1989e-06 deg
node 194.6832532490576 2.5875e-05 deg
peri 132.0898053681535 2.9842e-05 deg
M 195.2835724698389 1.4885e-05 deg
tp 2459931.310085133685
(2022-Dec-17.81008513)
6.8414e-05 TDB
period 1597.239781077404
4.37
1.5852e-05
4.34e-08
d
yr
n .2253888265650166 2.2369e-09 deg/d
Q 3.18493120108899 2.1073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      10393 days (28.45 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:15  

Additional Information
 Earth MOID = 1.16917 au 
 Jupiter MOID = 2.28885 au 
 T_jup = 3.326 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.86   n/a MPCxxxxx  

187157 (2005 RT9)          Discovered 2005-Sep-09 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2012-May-21 19:01 00:02 Thisb 0.0440327908237644 0.0440304396681712 0.0440351421763722 3.24842523933667 3.24842519166881 2456069.292334243 1.76197899594589 214.705756178999 67.783437505449 62.0283163890798 86951.4726368658 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 21:54:15 2021-Apr-13 21:54
2182-Oct-16 13:41 00:04 Thisb 0.0483896139904487 0.0483200559986339 0.0484591836691988 3.25364002712956 3.25363998382306 2518308.069805250 4.25269994774064 3663.27990687571 91.7173530379571 18.889954392535 25598.5580235478 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 21:54:15 2021-Apr-13 21:54
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 15:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin